Product Description:

The U9D-A/N1/M23/CVR servomotor is manufactured by Kollmorgen within the PLATINUM U Servomotors series. Designed for precision positioning in automated assembly stations and small gantry axes, the motor converts electrical power into controlled mechanical rotation so machine controllers can index loads with minimal settling time. Its laminated stator core, rare-earth magnets, and integral feedback interface allow the drive to regulate current and velocity accurately during rapid duty cycles common to pick-and-place, labeling, and filling machines.

In parallel winding configuration, the electromagnetic constants emphasize high current and low voltage. The motor develops a back electromotive force of 2.5 V/KRPM, which means the drive can command speed before reaching the DC bus limit. At 3,000 rpm, the parallel coils draw 15.5 A and require only 12.5 V at the terminals, permitting direct connection to low-voltage controllers. This current produces a continuous torque of 45 oz-in, which is suitable for light belt tensioning or small indexing wheels. Because these figures are achieved with natural convection, the parallel winding suits systems that prioritize acceleration over peak efficiency.

When the same motor is wired in series, the electrical demands change. The series back EMF rises to 5.0 V/KRPM, so the drive sees a higher generated voltage at the same speed. Consequently, only 8.7 A is needed to reach 3,000 rpm, but the terminals must accept 23.9 V. The lower armature current yields a modest increase in delivered torque to 50 oz-in, which is useful for holding tasks where continuous load is present and bus current should stay low. Selecting between parallel and series connection allows the motor to match different low-power or battery-fed servo amplifiers without changing the mechanical hardware.